anemometer ea980r user manual v2.1 8-7-17 manual... · temperature. to take a measurement, hold the...

eA980R Digital Anemometer

User Manual

1. Overview

Thank you for purchasing the ennoLogic eA980R anemometer,

a high quality instrument which measures 8 parameters:

• Wind Speed (mph, m/s, ft/min, knots, km/h)

• Wind Chill (°C / °F)

• Air Temperature (°C / °F)

• Humidity (%)

• Heat Index (°C / °F)

• Dew Point ((°C / °F)

• Barometric Pressure (hPa, mbar, inHg)

• Pressure & Relative Altitude (m, ft)

The eA980R anemometer comes with many powerful features

including the following:

• LCD with White Backlight

• Beaufort Scale

• Maximum, Minimum, and Average Reading Display

• Hold Function

• Low Battery Indicator

• Auto Power Off (with override option)

• Calibration Function

• CE Certified & RoHS Compliant

Important: This meter is accurate at low and mid-range air speeds.

Consistent use at very high speeds, e.g. from the window of a fast

moving car will damage the impeller’s bearing and reduce accuracy.

Specifications:

Parameter Units Range Resolution Accuracy

Wind Speed

mph 0 to 65 0.2

±5%

m/s 0 to 30 0.1

ft/min 0 to 5860 19

knots 0 to 55 0.2

km/h 0 to 90 0.3

Wind Chill

oC

0 to 30m/s, -45

to 10 0.1 ±1

oF

0 to 65 mph,

-49 to 50 0.1 ±1.8

Temperature

oC -29 to 70 0.1 ±1

oF -20 to 158 0.1 ±1.8

Relative

Humidity %RH 0 to 100 0.1 ±3%

Heat Index

oC

0 to 100%RH,

21.1 to 54.4 0.1 ±2

oF

0 to 100%RH,

70 to 130 0.1 ±3.6

Dew Point

oC -29 to 70 0.1 ±2

oF -20 to 158 0.1 ±3.6

Barometric

Pressure

hPa 10 to 1100 0.1 ±1.5

mbar 10 to 1100 0.1 ±1.5

inHg 0.29 to 32.48 0.01 ±0.05

Altitude m -700 to 9000 3 ±12

ft -6000 to 30000 9 ±50

Operating Temperature 32oF to 122

oF (0

oC to 50

oC)

Operating Humidity 10% to 90% RH

Storage Temperature 14oF to 140

oF (-1

oC to 60

oC)

Storage Humidity 10 to 75% RH

Battery LIR2032 3.6V

Current Consumption About 2.5mA (5mA with backlight on)

Size 4.3” x 1.8” x 0.8” (110*45*20 mm)

Weight 2.1oz. (60g) including battery

Product Description:

1. Vane Impeller

2. Temperature & Humidity Sensors

3. LCD with Backlight

4. Units Button

5. Power Button

6. Set Button

7. Battery Cover

8. Lanyard Attachment Point

How to Use Your Anemometer

Turning the Anemometer On and Off

Press the Power button briefly to turn the anemometer on.

Press the Power button for more than one second to turn the

anemometer off.

After 5 minutes without any operation the anemometer will power

off automatically.

To disable Auto Power Off hold the Set button down while turning

the unit on. You will see the Power Symbol appear on the LCD.

Warning, if you disable Auto Power Off, the meter will stay on until

the battery runs out unless you turn it off manually by holding down

the Power Button.

Backlight

Press the Set button for more than 2 seconds to turn the backlight

on or off.

Cycling Through Measurement Parameters

Press the Set button briefly to change the displayed parameter. The

instrument will cycle through the parameters in the following order:

Wind Speed » Wind Chill » Temperature » Relative Humidity » Heat

Index » Dew Point » Barometric Pressure » Pressure Altitude.

Hold Function

To freeze the current reading, press the Units button for more than 2

seconds. Press it again for more than 2 seconds to exit this mode.

Changing the Measurement Units

In any measurement parameter mode briefly press the Units button

to change the measurement unit displayed. For example, in wind

speed mode choose between mph, m/s, ft/min, knots, and km/h.

Max/Min/Avg Value Measurement Function

This function allows you to track the maximum, minimum and

average of your readings for any parameter each time you power on

the unit.

In any measurement parameter mode briefly press the Power

button to display the Maximum Reading. A second press will display

the Minimum, a third press will display the Average and a fourth

press will return the meter to the real-time current readings.

Max: In this mode the meter will display the maximum value

registered since it was powered on.

Min: When in this mode the meter will display the minimum value

registered.

AVG: When in this mode the meter will display the average of all

values since it was powered on.

NOTE: The Max, Min and Avg values will be reset when the meter is

turned off.

Beaufort Scale

The Beaufort scale categorizes wind speed according to observed

conditions at sea or on land:

0 - Calm (<1mph)

1 - Light air (1-3mph)

2 - Light breeze (4-7mph)

3 - Gentle breeze (8-12mph)

4 - Moderate breeze (13-18mph)

5 - Fresh breeze (19-24mph)

6 - Strong breeze (25-31mph)

7 - Near gale (32-38mph)

8 - Gale (39-46)

9 - Strong gale (47-54mph)

10 - Storm (55-63mph)

11 - Violent storm (64-72mph)

12 - Hurricane (>73mph)

The Beaufort scale is displayed in all parameter modes according to

current wind speed (see display legend).

Parameter 1: Wind Speed

To measure wind speed, hold the anemometer into the wind or air

flow you want to measure, and the device instantly begins displaying

wind speed in miles per hour (mph). To change the unit, press the

Units button. To capture and hold a reading press and hold the Units

button for more than 2 seconds. This is handy for measuring air flow

in difficult situations.

To track maximum, minimum, and average readings simply press the

Power button briefly to cycle through them. For average readings,

keep in mind that periods of zero wind speed may skew your

average. In this case you may want to restart the unit to reset the

Max/Min/Avg data.

1. Wind Speed Units: mph, m/s, ft/min, knots, km/h

2. Max/Min/Avg Indicator

3. Hold Current Wind Speed Reading

4. Beaufort Scale

5. Wind Speed Value

Parameter 2: Wind Chill

Wind chill is the perceived lowering of air temperature experienced

on exposed skin due to wind. The faster the wind blows, the more

readily it cools your skin as it replaces the ambient warm air

surrounding your skin. In other words, the air “feels” colder than it is

because of the chilling effect of the wind.

Wind Chill is expressed as a temperature which is typically lower

than the air temperature. Wind chill temperature is valid only for

temperatures at or below 50 °F with wind speeds above 3.0 mph.

To measure wind chill, press the Set button once after turning on the

unit.

1. Wind Chill Units: oF or

oC


3. Hold Current Wind Chill Reading

4. Beaufort Scale

5. Wind Chill Value

Parameter 3: Temperature

After turning the unit on, press the Set button twice to display

temperature. To take a measurement, hold the anemometer so air

passes through it. Temperature response depends upon air flow

through the unit due to the location of the temperature sensor inside

the unit. Response may be slow at zero air flow (5 to 10 minutes),

but typically only takes 60-90 seconds in steady air flow.

1. Temperature Units: oF or

oC


3. Hold Current Temperature Reading

4. Beaufort Scale

5. Temperature Value

Parameter 4: Relative Humidity

Relative humidity is the amount of moisture in the air compared to

the maximum amount of moisture the air can "hold" at that

temperature.

To measure relative humidity, turn on the anemometer, and press

the Set button 3 times. The display will show “%RH” below the value

of relative humidity.

Relative humidity and temperature are measured by the same

sensor. This sensor is located behind the small hole left of the

impeller above the display.

1. Relative Humidity Units: %RH


3. Hold Current Relative Humidity Reading

4. Beaufort Scale

5. Relative Humidity Value

Parameter 5: Heat Index

The heat index is what the temperature feels like to the human body

when relative humidity is combined with air temperature. Heat index

is only valid at temperatures at or above 80 °F.

The human body cools itself by perspiration, which removes heat

from the body by evaporation. High relative humidity slows

evaporation, which slows down heat removal from the body. This

causes the feeling of being overheated. Heat index is attempt to

measure this apparent temperature.

To measure it, press the Set button 4 times after turning on the unit.

1. Heat Index Units: oF or

oC


3. Hold Current Heat Index Reading

4. Beaufort Scale

5. Heat Index Value

Parameter 6: Dew Point Temperature

The dew point is the temperature at which air is saturated with

water vapor. When air has reached the dew-point temperature the

water vapor is condensing at the same rate at which liquid water is

evaporating. Below the dew point, water will begin to condense on

surfaces forming dew, or particles in the air forming clouds and fog.

To measure dew point, power on the anemometer and press the Set

button 5 times until “Dew Point” is displayed in the upper left

corner.

1. Dew Point Temperature Units: oF or

oC


3. Hold Current Dew Point Temperature Reading

4. Beaufort Scale

5. Dew Point Temperature Value

Parameter 7: Barometric Pressure

Barometric pressure is the force per unit area exerted by the entire

column of air above that area. Barometric pressure measurements

are displayed by the anemometer in inches of mercury (inHg),

hectopascal (hPa), or millibar (mbar).

Standard sea-level pressure, by definition, equals 29.92 inches of

mercury. Variations in sea-level pressure are quite small: the highest

and lowest sea-level pressures ever recorded are 32.01 inHg in

Siberia and 25.9 inHg during a typhoon in the South Pacific.

To measure barometric pressure, turn on the anemometer and press

the Set button 6 times until inHg is displayed. Press the Units button

to change the units to hectopascal or millibar.

1. Barometric Pressure Units: inHg, hPa, mbar

2. Max/Min/Avg Barometric Pressure Reading Display

3. Hold Current Barometric Pressure Reading

4. Beaufort Scale

5. Barometric Pressure Value

Parameter 8: Pressure Altitude & Relative Altitude

The eA980R measures pressure altitude and not absolute altitude

(unlike a GPS). Pressure altitude is a relative altitude measurement

based on barometric pressure. Pressure altitude is the altitude

indicated by an altimeter that is adjusted to measure height above

the Standard Datum Plane. The Standard Datum Plane is a

theoretical level where the weight of the atmosphere is 29.92 inches

of mercury. As atmospheric pressure changes, the Standard Datum

Plane may be below, at, or above sea level.

Pressure altitude is most commonly used for aviation planning.

To measure pressure altitude, press the Set button 7 times after

turning on the anemometer. Press the Units button to switch from

feet to meters.

1. Altitude Units: ft, m


3. Hold Current Altitude Reading

4. Beaufort Scale

5. Altitude Value

Relative Altitude Measurement:

The ennoLogic anemometer is able to display relative altitude (also

referred to as climb or ascent/descent). Relative altitude allows you

to measure changes in altitude from the point where you enter

“Relative Altitude” mode. To enter this mode, press the Set button

until you get to altitude, then press and hold the Units button for

five seconds. The LCD will first display REL and then set the altitude

to zero. From then on, the altitude reading will display the difference

between your newly set zero reference altitude and your current

position. To change back to Pressure Altitude, press and hold the

Units button again for five seconds.

Calibrating Your Anemometer:

NOTE: DO NOT ATTEMPT TO CALIBRATE WIND SPEED UNLESS YOU

HAVE ACCESS TO A CALIBRATION SOURCE FOR AIR FLOW!

Your anemometer was calibrated at the factory. But you can

recalibrate it if you want by following these steps:

Step 1: To enter calibration mode, hold the Units button down while

turning on the anemometer.

Step 2: Use the table below to find the parameter to calibrate. Press

the Units button to cycle to the corresponding number you wish to

select. Now press the Power button to begin calibration.

Number Calibration Function Mode

1 Wind Speed

2 Temperature

3 Relative Humidity

4 Barometric Pressure

5 Pressure Altitude

Step 3: Press the Units button to choose the digit you wish to change

(the selected digit will flash). Use the Set button to change the value.

Step 4: Press the Power button for more than 2 seconds to store the

new value and to exit calibration mode.

Calibrating Barometric Pressure

To calibrate barometric pressure use a reliable instrument or trusted

source for barometric and altitude readings for your local area.

Calibrating Altitude

Calibrating altitude is not as simple as entering the desired altitude

value in feet.

The altitude displayed by the anemometer is pressure altitude, and

for every atmospheric pressure there is a corresponding default

pressure altitude: http://www.csgnetwork.com/pressurealtcalc.html.

That’s why the altitude displayed by your anemometer typically does

not match the true altitude at your location. The anemometer works

like an altimeter.

If you want to calibrate the altitude to your current true local

altitude, you must subtract a pressure dependent offset from the

altitude value you want to calibrate for. This offset depends on the

current atmospheric pressure at the time of calibration. To

determine the offset, you calibrate the anemometer to an altitude of

"00000". Then turn it back on (into normal operating mode) and read

the altitude. This is your offset. Subtract the offset from your true

local altitude, and calibrate the anemometer to the resulting value.

Example: Your anemometer displays a pressure reading of 29.95

inHg. Turn it off and hold the Units button down and turn it back on

again to enter calibration mode. Press the Units button several times

until the number on the displays shows "5", the code for altitude.

Press the Power button. The display will now show a value that is

actually the default pressure altitude at the current atmospheric

pressure, in this case -0026 feet. Ignore this value and set all digits to

0 so the display shows "00000". Then turn the anemometer off.

Now turn the anemometer back on and press the Set button 7 times

until the display shows altitude. The value displayed is the

pressure-dependent offset that you have to subtract from your true

local altitude. In our example the offset is "-371". We want to

calibrate for an altitude of 500ft, our true local altitude. So we

subtract -371 from 500 feet: 500 - (-371) = 871. This is the altitude

value we have to calibrate for so the anemometer will display an

altitude of 500 feet.

Turn the unit off, and enter altitude calibration mode again. This

time, change the digits to "00871" and press the Power button until

the unit turns off to store this value.

Turn the anemometer back on and check the altitude. Its displayed

value will now be very close to 500 feet (499 feet in this example,

resolution is limited by barometric pressure resolution.)

Keep in mind that your new altitude reading is still pressure

dependent. So any changes in atmospheric pressure will change the

altitude reading. But calibrating to a true known local altitude can

still be very useful if the atmospheric pressure stays roughly the

same, and you want to use the anemometer to determine altitude

while hiking or climbing, for instance.

Battery Replacement:

The ennoLogic anemometer uses one LIR2032 3.6V Lithium-Ion coin

cell battery. This battery can be recharged using a LIR2032-

compatible coin cell charger. If you choose to replace it with a new

LIR2032 battery instead, make sure to recycle the old battery.

NOTE: Do NOT use CR2032 or BR2032 batteries. They do not

provide sufficient voltage. Only LIR2032 batteries provide the 3.6V

needed by this instrument.

The battery should be replaced if the anemometer fails to power on

or if the low battery icon appears on the LCD. Replace the

battery with a new or charged LIR2032 3.6V Lithium-Ion battery. To

do this, locate the battery compartment on the back of the

anemometer. Turn the battery compartment cover in a

counterclockwise direction to remove it. Remove the old battery and

insert a new battery face (positive side) up. Replace the battery cover

turning clockwise to tighten.

If the anemometer fails to power on or if the display remains blank,

follow these troubleshooting steps:

1) Make sure the battery makes good contact with the pins,

and is installed correctly (positive side up).

2) Remove the battery for one minute, then re-install.

3) Replace the battery.

anemometer ea980r user manual v2.1 8-7-17 manual... · temperature. to take a measurement, hold the...

Documents